Valve-gear.



z winning/1 4M. BmKlGT.

VALVE GEAR.

Patented May S, l1917.

-H lil lil .ir/ V f" www l5-Q' i '/U fil) UNITED STATES imno iamxro'r,or Bois-commises, 1in-Anon.

vALvE-omim-- Specication ot iettersl'atenti .Piarrnri'r omen.

- .Patent-ed Mays, 173917'.

Application md :une 21,1915. f, semina. $5,383.

the @laws be bf the hollow spindle bi una to slideon thesaid spindle,without being able engage lirveotly, without interposition of Il anyinte odia-te part', with the. spindles of thevl'" f f Theinentioniifurther consists in provid onfurther consists in other arl-antaken in, conjimenqn with mg .accompany raWig, in wliichl@ oristructionof the 'according to! his n-vention. is

shows ne', tli'e axis of. viil'fel* 4gs' and 3"sl1ow respectivelyfjinelevation-hir bottom lan vieri' aspanner used for -adjuatirig the engthof the said valve f elevation '35 'built-in the usual Wa.y,.w1th tliedierence that each ofthe cam shafts agis-mounted so v that its axisl is inthepIa-n'e .passnfgl through the. axes-.of a-Seliesof valves o fthe saidengine vand is' normal to the. said axes' and on each ofthe said camshafts are mounted cams-@Veo that they can engage directlywith'thespi-ndles of thevalves b-- .The valve-spindles are made sothattheir E length can'be modified-at will'. Echvalve onaportion of itslength with a tapped thread b'f preferably of'v 'nepitch', and atV its.end, is provided Wiislingair ofv diametrically opposite claws b suci'ently- -long TA disk o is provided endA has onone O f its faces aseries o ,f teeth The-.disk of has a circular`l flange o provided on theclin- 1 i' cumfe'rence with a ring of cylindrical holes 55or-"perforations c3, while atV its center vthe disk c has@ hole which isadapted to over spindle with means for modit will, so as to compensate gmentsV which,A `will"` .fmore fully pointed-- out in the followingdescription,

b' has ahollow spindle or stem blrprovided to act aslong keys as will beseen further on;

' to rotatev about A cyl indricalj l spindle d hasnt one of its ends ascrew thread d which can be screwedv .into the tapped thread b2 and hasat its.

other end a, diskfferof circular outline.. hav'- t lng'an outsidediameter e ual to; the outside diameter of the disk c. he said disk eis.

provded on its Vface oppositeth'edisk c, i

with a ring of teeth e1 which canl engage with the teeth o1 of the ringc,` andl on its circumference.' along the generatrices, with grooves ke3which can form teeth on thesaid circumference.

The valve is introduced into the cylinder ,of the engine, and itsspindle b1 isintrO duced into the guide conduit f provided for thepurpose in the cover of the cylinder of dle o are then engaged, on theouter slide-of' after having inserted between'vthe said disk" and theouter face of the cover of the cylinthe saidcover, with the hole of thedisk 0,7

7e the said engine. The claws b3 of theispln-f der, a helical spring gwhich surrounds the guide f. The screw threaded spindle d is thenscrewed into the tap ed thread of Vthe hollow spin dle b1. An anjustment'spannenis 'provided havin other end a pair o parallel pins h1equidisa handle' h" and on.its

tant from the axis of the spindle h ofthe said spannsn` and such thattheir-'axial distance a part is practically equal to the dis ,tanceseparating from each other therespecv tive `central planes of one oftheV holes cs' of the disk c and of one of the grooves1 es ofthe disk e.

means of the Spanner h on-'the'disk c, b en- .gaging one oi 'its pinswith one` of the cles c of the Bange c2 and by actin'- Withifthe other'`in on theiffie'e offorie o thetleeth .forme .by thegioves e of theprojection e.

With the use of this Spanner the length of the Valve spindle can'lbeadjusted at will, it being only necessary to actby' mounted so that whenthe cam engageswith the disk e the latter has a tendency to pressagainst its guide i.

bviously the invention is not limited to the construction described,butv comprises any modifications Within the scope of the claims,particularly that `in which a nut and ulock-nut arc used for adjustingthe length of the valve spindle.

Having now particularly described and ascertained ,the nature of my saidinvention and in what manner the samejis to be per-'- formed, Ideclarethat What I claim is :w

1. A valve gear comprising a valve stem formed of two telescopicallyassociated ad- 'ustable sections, the one section having a head' on theupper free end thereof and a lower screw-threaded stein and the otherysection tubular and interiorly screw-thremt ed to receive the stein ofthe other section and-also provided with a valve onthe lower end of' thesame, a non-rotatable disk mounted .on the section provided with thevalve and having a vertical sliding' movement on said section, the lowerside oit'wthe head and the upper side of the vdisk being respectivelyprovided with interlocking teeth, and resilient'means. engaging theunderside of the disk and a part of the valve gear for holding said valveupon its seat and forcingsaid disk against the head whereby the teeth ofthe head and disk are caused to engage to lock the valve stein sec-tionsin adjusted positions.

2. A valve gear comprising a valve stein composed of two adjustablesections, one of the sections being tubular and threaded and the othermovable in the tubular one, the tubular section having a valve on .itslower end and the remaining section being prol vided with`a 'head'on itsupper free end, a non-rotatable slidable disk on the stem ad jacent tothe said head, beveled teeth being formedon the adjacent opposing sidesof the disk and head, spring meansengaging the disk and a suitableabutment and operating to normally seat the' valve and force the toothedsides of the disk and head into enL gagernent to lock the valve stem'se`c`tions in adjusted positions, the disk and head being formed'withmeans .for adjustably turning one with relation to the other.` l

3. The'eoimbination with a valve seat, of a valve stem having a valvenormally held in closed positionagainst the csaid seat, the valve stemcomprising two adjustable sections, onesection carrying the valve and ofelongated tubular form With interior threads and the other section alsothreaded and adjustably fitted in the tubular section and carryin aydisk head on its free upper end, the sai disk head being provided withperipheral 'spaced operating means, a non-rotatable 'disk slidablyassociated with the tubular portion of the stem. and held adjacent tothe said head, the disk being also provided with peripheral operatinmeans, the spaced operating means of the ead and the-peripheraloperating means of the nonr'otatable disk providin means for turning oneof these devices relnhtively to the other to eect the adjustmenk'thedisk and he'ad on their adjacent faces having interlocking teeth, andaspring surrounding said valve stem and engaging the disk and an abutmentforming part of the valve seat organization and exertion a tension tonormally seat the valve and i'irce the teeth of the slidable disk intoengagement with the teeth of the head to lock the valve stem sections inadjusted positions.

'4. The combination of a valve seat hav 'ing an upstanding guide, avalve normally closed against said seat and having a stern comprisingtwo adjustable sections, one being tubular and threaded and the otherthreaded and shiftable in the tubular see tion, the valve being` carriedby the tubular section and the remaining section having an enlarged headat its upper end, a non-rotatable disk slidably mounted'on the valvestein and engaging the tubular section and heldfadjacent to the saidhead, the head and disk being provided with interlocking teeth on theiradjacent faces and both the head and disk engaging the opstandingguide,.the said vguide serving to' brace the head and disk and maintainthe latter in proper vertical -alinement, and a spring engaging a partof the valve seat and the said disk to effect an interlock of the teethof the head `and disk'and maintain the sections of the valve stem.,indocked adjusted positions, the head and disk. being provided Withperipheral means whereby one may be turned relatively *to the lother ineffecting the adjustment of -the valve.

In testimony whereof I have hereunto set myv ianddin presence of tw'osubscribing Witnesses'.

MARC BIRKIGT. Witnesses:

' MATEQGRAY,

G. INGENAULT.

